The moniker rubble pile is typically applied to all solar system bodies with Diameter between 200m and 10km - where in this size range there is an abundance of evidence that nearly every object is bound primarily by self-gravity with significant void space or bulk porosity between irregularly shaped constituent particles. The understanding of this population is derived from wide-ranging population studies of derived shape and spin, decades of observational studies in numerous wavelengths, evidence left behind from impacts on planets and moons and the in situ study of a few objects via spacecraft flyby or rendezvous. The internal structure, however, which is responsible for the name rubble pile, is never directly observed, but belies a violent history. Many or most of the asteroids on near-Earth orbits, and the ones most accessible for rendezvous and in situ study, are likely byproducts of the continued collisional evolution of the Main Asteroid Belt.

中文翻译：

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碎石堆小行星

绰号碎石堆通常适用于直径在 200m 到 10km 之间的所有太阳系天体——在这个尺寸范围内，有大量证据表明几乎每个物体都主要受自重束缚，具有显着的空隙空间或不规则的大孔隙度。成形的组成颗粒。对这一群体的理解来自对衍生形状和自旋的广泛群体研究、数十年对多种波长的观察研究、对行星和卫星的影响留下的证据以及通过航天器飞越或交会对少数物体的原位研究. 然而，其内部结构导致了瓦砾堆的名称，从未直接观察到，但掩盖了一段暴力历史。近地轨道上的许多或大部分小行星，